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Nikolay A Legky vs Aaron Summerscale
FRA-chT (1996/97), Clichy FRA, rd 9, May-02
Slav Defense: Czech Variation. Bled Attack (D17)  ·  1-0



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Nov-30-08  Antonius Blok: Damn! in my weird reflexions I found 24.h4 but DAMN! It's not just the first move !!!

All the moves from 24 to 30 are INSANE! This player has his brain and nerves freezed with liquid nitrogen!

Nov-30-08  hms123: <jazzer32> Suetin vs R Sherbakov, 1991
Nov-30-08  johnlspouge: Sunday (Insane):

N Legky vs A Summerscale, 1997 (24.?)

White to play and win.

Material: Even. The Black Kg8 has 3 legal moves, all dark squares. The White Bb1 controls the light squares around the K-position. Both White Rs are active: Ra3 is lifted to the clear 3-rd rank, while Re1 has an open file and overprotects the outpost Ne5 with Bf4. White has a battery Qd2 and Bf4 attacking Pg5. The White Kg1 is secure but vulnerable to back-rank mates if White loses control of c1. The White pieces are mobile but require activation. Under the correct conditions, White can threaten Ra3-b3, winning Nb4. Black seems to threaten capture of Bf4, but in fact, White wants to provoke 24…gxf4, to penetrate the weak dark squares in the Black K-position.

(A) 24…gxf4 25.Qxf4 (threatening 26.Qxf6 or 26.Qxh6 27.Rg3+ and # soon)

(A.1) 25…Bxe5 26.Rxe5 (threatening 27.Qxh6 28.Rg3# or 27.Rg3+ then 28.Rxe6 or 28.Qxh6#)

Black must give up too much material to stop #, because 26…Qc6 27.Rc3 does not work.

(A.2) 25…Bg7 26.Rg3 (threatening 27.Qxh6 28.Qxg7#)

(A.2.1) 26…Kf8 27.Nxf7 Bxf7 [else, drop Be6 or Bg7 and lose 2P]

<[I went for 28.Qg4, but Toga evaluates it at about -0.5 P, because of the defense 28…Bh8.]>

(A.2.2) 26…Qe8 27.Qxh6 (threatening 28.Qxg7)

27…Kf8 [Qf8 28.Qh7#] 28.Rxg7

White has won 2P and still has a fierce attack.

Candidates (24.): Nxf7, Rb3, h4

24.h4 (threatening 25.hxg5 winning a P)

(1) 24…Bxe5 25.Bxe5 (threatening 26.Bf6 with hideous mate threats)

Material is even, but White has an iron grip on the dark squares around the Black Kg8. Black has to dodge mate from the entire White army, as well as loss from h8=Q.

(2) 24…gxh4 25.Rb3 Bxe5 (to permit 26…Rc5 to save Nb4) 26.Bxe5

The result is as in Variation (1).

(3) 24…gxf4

This variation throws down the gauntlet, but loses as in Threat (A).

Nov-30-08  Grampmaster: I was looking at:

24. Rh3 if gxf5

25. Rxh6 Bxe5

26. Rxe5

I liked white's attacking chances in this position but there were too many choices to be confident I was on the right track.

Nice puzzle.

Nov-30-08  johnlspouge: < <Once> wrote: And, to misquoute Data - for a computer, 90 seconds is a very long time.>

0.68 seconds :)

And if you ever again want to access a submerged memory, first check your nested memory 5155, as in the Next Generation episode "Brothers". (I did not bother to memorize Data's password from the same episode ;>)

This type of stuff will make you the life of your next party (if you ever get out).

For one of the most famous anecdotes about a number, one known to every mathematician, check out

Nov-30-08  thegoldenband: <svbabu: What if Black continues with 31. ..Nc2 ?>

I assume the answer is 32. Bxc2, after which Black is mated within a few moves (32...Rxc2 33. Rf7).

Nov-30-08  A.G. Argent: <Once> and < Doctor John> Yes, but don't you think that perhaps Data is borderline obsolete by now even though he dwelt in the future? 90 seconds wasn't as much of a horror show as it is now back then or..or...or...oh, never mind. But, according to his own diagnostics of his own self, his personal storage capacity was 800 quadrillion bits. Still somewhat impressive, I suppose. Also, John, if you want the password he entered from the Brothers episode, lemme know, I have it. Ain't kiddin'. And, alas, what ever happened to Gates McFadden? Stunning woman. Guess you could say I had a crush on Crusher. Whatever. Engage.
Nov-30-08  DarthStapler: I didn't get it
Nov-30-08  SufferingBruin: <I suspect Legky played 24.h4! without working out the win entirely.>

Good! I was doing the same thing! :)

Yeah, I got h4 but I only played it because I saw nothing else. OTB, I would've tried to save the bishop.

Premium Chessgames Member
  agb2002: All white pieces are prepared to attack the black castle and only the bishops defend it. There are several candidate moves: Rg3, Rb3, Nxf7, Bxg5, h4. I find preferable 24.h4:

A) 24... gxf4 25.Qxf4

A.1) 25... Bg7 26.Rg3

A.1.a) 26... Kh8 27.Nxf7+ Bxf7 28.Qxf6 Rg8 29.Qg6 winning.

A.1.b) 26... Kf8 27.Nxf7 Bxf7 28.Qd6+ Kg8 29.Qf6 Bg6 30.Rxg6 Qd7 3.Re7 winning.

A.1.c) 26... Qe8 27.Qxh6 Kf8 (27... Qf8 28.Qh7 mate) 28.Rxg7 Ke7 29.Nxf7 winning.

A.2) 25... Bd8 26.Qxh6, threatening Rg3+ and Bh7+.

A.3) 25... Kg7 26.Rg3+ Bg5 27.hxg5 h5 28.Qf6+ followed by g6.

A.4) 25... Bxe5 26.Rxe5 Rc1+ 27.Kh2 Rxb1 28.Qxh6 winning.

B) 24... g4 25.Bxh6 Bxh4 26.Bg5 Bxg5 27.Qxg5+ Kf8 (27... Kh8 28.Qh6+ Kg8 29.Bh7+ Kh8 30.Nxf7+ Bxf7 31.Bg6+ Kg8 32.Qh7+ Kf8 33.Qxf7 mate) 28.Ng6+ fxg6 29.Rxe6 with a winning attack.

Time to post and check.

Premium Chessgames Member
  agb2002: <johnlspouge: ... For one of the most famous anecdotes about a number, one known to every mathematician, check out;

I found it in the prologue to Hardy's 'A mathematician's Apology'.

Nov-30-08  waustad: No quiet day this time in Clichy.
Nov-30-08  johnlspouge: < <agb2002> wrote: [snip] I found it in the prologue to Hardy's 'A mathematician's Apology'. >

You are right. There it is, on p. 37 ;>)

Nov-30-08  jswave: h4 is so that after gxf4 25.Qxf4 black cannot play 25...Bg5
Nov-30-08  johnlspouge: < <A.G. Argent> wrote: [snip] Also, John, if you want the password he entered from the Brothers episode, lemme know, I have it. Ain't kiddin'. >

Unless you are much more pleasantly insane than I can imagine, <A.G.> (which might be possible), you left me wondering how you would get the password without exerting undue effort. Even the Wikipedia article on "Brothers", which mentions a "complex password", does not give the actual password.

I got it - you can use the captions feature on your DVD :)

Here it is, for posterity, from the captions and checked against the sound:


The Enterprise computer screen wrongly displays the verbal equivalent (i.e., "one", "charlie", etc.) of


(I also found the correct password later at, which mentions that "the computer could not keep up with [Data]".)

I tried inserting blanks to compare the correct and incorrect passwords to fashion the definitive version of this (ridiculous) piece of trivia, but CG's nonproportional font foils me.

Nov-30-08  johnlspouge: < <jswave> wrote: h4 is so that after gxf4 25.Qxf4 black cannot play 25...Bg5 >

Not so. If you skip 24.h4, Toga confirms that

24...gxf4 25.Qxf4 Bg5 26.Rg3

wins anyway. As my earlier post states, White actually wants to provoke 25...gxf4.

Nov-30-08  Iron Dragon: Apparently 24.Rh3 putting pressure on the h pawn sucks.
Nov-30-08  SufferingBruin: Hey, johnlspouge? Nice job on the analysis. Being a member of CG, I like to think every now and again I learn something other than just getting involved with fine conversation and I wanted to say I learned a helluva lot from your post.

Good stuff.

Nov-30-08  njchess: I got this one after almost 10 minutes. I noted that although Black's bishops were well placed in the center, they were essentially "bad" bishops. Moreover, Black's pieces were not well coordinated. Finally, although his g-pawn was threatening White's bishop, Black's king side was overextended.

With respect to White, I noted that the queen was on same diagonal as the threatened bishop, and in combination with the rook on the third rank opened up, created a solid king side attack for White.

Ultimately, the reason I played h4 was that it was more forcing than Rg3, and I could find no counter play from Black that indicated that I shouldn't play it.

Nov-30-08  johnlspouge: < <SufferingBruin> wrote: Hey, johnlspouge? Nice job on the analysis. >

Thanks, <SufferingBruin>. I like to think that no kind word is ever wasted :)

Nov-30-08  MORPHY MARVELLOUS: I got rook b3 as first move and rybka 3 doesnt like it at first until gxf and Qxf, then I believe it shows it just as strong move as h4.
Nov-30-08  johnlspouge: < <MORPHY MARVELLOUS> wrote: I got rook b3 as first move and rybka 3 doesnt like it at first until gxf and Qxf, then I believe it shows it just as strong move as h4. >

If Black plays 24...gxf4, then White's move is almost immaterial, because White is trying to provoke 24...gxf4 (see my previous post). After 24.Rb3, Black can respond 24...Qxa5, and then if Black continues to avoid ...gxf4 and plays well, nothing happens .

Dec-01-08  vacreeper: <svbabu: What if Black continues with 31. ..Nc2 ? > 32. Bxc2 Rxc2 33. Rf7
Dec-02-08  ongyj: <Once> Thanks alot. Greatly appreciated.
Premium Chessgames Member
  patzer2: For the Sunday Nov 30, 2008 puzzle solution, White's 24. h4! sacrifices a piece for a winning attack against Black's helpless King.
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